Graco Nautilus Owner's Manual page 28

5. The harness straps must go into the slots
œ.
even with or just above the shoulders
If straps are in proper slots go to page 32.
œ

6 . To adjust harness straps:
a) Turn seat around, so you will have access to
the rear of the seat.
b) From the rear of the seat remove straps

.
from metal junction plate
28